title: Handling technology of Mega-Watt millimeter-waves for optimized heating of fusion plasmas.
abstract: Millimeter-wave components were re-examined for high power (Mega-Watt) and steady-state (greater than one hour) operation. Some millimeter-wave components, including waveguide joints, vacuum pumping sections, power monitors, sliding waveguides, and injection windows, have been improved for high power CW (Continuous Waves) transmission. To improve transmission efficiency, information about the wave phase and mode content of high power millimeter-waves propagating in corrugated waveguides, which are difficult to measure directly, were obtained by a newly developed method based on retrieved phase information. To optimize the plasma heating efficiency, a proof-of-principle study of the injection polarization feedback control was performed in the low power test stand.
authors.affiliation: National Institute for Fusion Science, 322-6 Oroshi-Cho, Toki-City, Gifu 509-5292 Japan. shimozuma.takashi@LHD.nifs.ac.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Shimozuma
authors.forename: Shin
authors.initials: S
authors.lastname: Kubo
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Yoshimura
authors.forename: Hiroe
authors.initials: H
authors.lastname: Igami
authors.forename: Hiromi
authors.initials: H
authors.lastname: Takahashi
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Takita
authors.forename: Sakuji
authors.initials: S
authors.lastname: Kobayashi
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ito
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Mizuno
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Idei
authors.forename: Takashi
authors.initials: T
authors.lastname: Notake
authors.forename: Michael A
authors.initials: MA
authors.lastname: Shapiro
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Temkin
authors.forename: Federico
authors.initials: F
authors.lastname: Felici
authors.forename: Timothy
authors.initials: T
authors.lastname: Goodman
authors.forename: Olivier
authors.initials: O
authors.lastname: Sauter
authors.forename: Ryutaro
authors.initials: R
authors.lastname: Minami
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Kariya
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Imai
authors.forename: Takashi
authors.initials: T
authors.lastname: Mutoh